Backport support for Cherryview/Braswell

Bug #1404217 reported by Timo Aaltonen on 2014-12-19
This bug affects 1 person
Affects Status Importance Assigned to Milestone
mesa (Ubuntu)
Timo Aaltonen

Bug Description


Mesa 10.1.x doesn't enable support for CHV/BSW, like it didn't for Broadwell. Enabling it needs five commits backported from 10.2:

70285f607ce2a06 i965: initialize more device info fields for Cherryview
9b6b084eb7b10d0 i965: Add Cherryview support.
850e372fc7ff337 i965: Drop bogus F32TO16/F16TO32 instructions on Broadwell - use MOV.
a5e54c91a3b7355 i965: Store absolute thread count in max_wm_threads on Broadwell.
dca84b4b5b23b68 i965: Use MOV, not OR for setting URB write channel enables on Gen8+.

[Test Case]
install trusty on a BSW machine, unity falls back to software rendering which is slow.

[Regression potential]
Slim, since it enables new HW, and though some commits are shared with BDW (they are both gen8) they are bugfixes.

Timo Aaltonen (tjaalton) on 2014-12-19
Changed in mesa (Ubuntu):
status: New → Invalid
Changed in mesa (Ubuntu Trusty):
assignee: nobody → Timo Aaltonen (tjaalton)
importance: Undecided → High
status: New → In Progress

Hello Timo, or anyone else affected,

Accepted mesa into trusty-proposed. The package will build now and be available at in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at . Thank you in advance!

Changed in mesa (Ubuntu Trusty):
status: In Progress → Fix Committed
tags: added: verification-needed
Robert Hooker (sarvatt) on 2015-01-14
tags: added: verification-done
removed: verification-needed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package mesa - 10.1.3-0ubuntu0.3

mesa (10.1.3-0ubuntu0.3) trusty; urgency=medium

  * Backport Braswell support (LP: #1404217)
    - i965-add-cherryview-support.diff
    - i965-drop-bogus-instructions-use-mov.diff
    - i965-initialize-more-device-info-fields-chv.diff
    - i965-store-absolute-thread-count.diff
    - i965-use-mov-not-or-for-setting-urb.diff
 -- Timo Aaltonen <email address hidden> Fri, 19 Dec 2014 14:47:21 +0200

Changed in mesa (Ubuntu Trusty):
status: Fix Committed → Fix Released

The verification of the Stable Release Update for mesa has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

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